The deal will strengthen Berkmann's position in the off-trade and combine two complementary portfolios and distribution networks, the companies claim.
Berkmann managing director Dinesh Changela said: "This acquisition will help us to expand our business significantly and to drive it forward. Importantly, as with our previous acquisitions, the businesses of Vinoceros and Laymont & Shaw will maintain their individuality."
Nick Richards, managing director of Vinoceros, added: "This deal represents a fantastic opportunity for us, especially with the financial backing of a larger organisation."
London-based Berkmann, which operates through six branches, is the UK agent for Yalumba, Georges Duboeuf and Bodega Norton. Vinoceros, based in Redruth, Cornwall, is UK agent for McGuigan wines while Laymont & Shaw specialises in Spanish wines.